One of them, ready for use, was covered with the black earth called 'frazil', which is extracted from the site of old charcoal works; the other, in course of construction, showed the successive layers of logs ranged in circles inside, ready for the fire.

It was on that frazil ice, that some people called lolly, that I meant to run for my life now, trusting to the resistance of the two feet of snow that lay on the lake in the mysterious way snow does lie on lolly, and to the snowshoes on my feet.

Changes in the ice regime will also require changes in operating strategies for hydroelectric installations, both at the generating facility to reduce impacts from ice (e.g., accumulations of frazil, the slushy ice-water mixture that develops when turbulent water starts to freeze), and for management of downstream flows to minimize negative impacts on river ecology and infrastructure.

Although all major ice types would continue to form, unless there were also significant changes in the flow regime, the frequency and magnitude of, for example, periods of major frazil ice growth will probably be reduced.

Also called needle ice: Ice crystals that form in supercooled water that is too turbulent to permit coagulation into sheet ice. Most common in swiftly flowing streams, but it's is also found in turbulent seas (where it's called lolly ice). It may accumulate on submerged objects, obstructing the water flow.